Motion-controlling mechanism



Dec. 15 1925. 1,565,834A

J. W. W'TSN MOTION CGNTROLLNC- MECHNI SM Filed March 30, 1920 2 Sheets-Sheet 2 all BYWMYJW- ATTORNEYS -dii rrjaentecl Dec. 15, i925.

UNIT-ED STATES PATENT OFFICE-f1" JOHN WARREN WATSON, OF WAYNE. PENNSYLVANA.

MOTION-CONTROLLING MECHANISM.

Ap'piicaton filed March 30. 1920. Serial No. 369,870.

' tii'eeiiiiny t\ve elemeiits,' :ind in particular relatestrt-liiit of* iiic'chiiniem intended tee-heck tlieton tiipi'd separation between thesprung und iinsprung portions ot n vei liicleitnil,iii-particular, a motor veliiele.

A pni'tieiiliir vobject of my invention is to pi-m-iile :i ,spring-controlled.friction ineeliiinisni wiiii'Springf'retiiining menne for innintu'iiiingilie Spne-itself, or any portion of thi- ;spi'ing. ont. o contact with one 0i' more.. relatively inevzibleparts 'of the mechanism. further el'jfeiztni my invention is to proviili-i ii beiiiiiig for Suid spring-retaining menne which is of `such. proportions, Y:intl whitli is se iirksobiiiteifl with another part of the inerixginisin, :is to insure, for long perimls: nifjseriice, tlie Vinziii'itiiiningvoffsriicl springreiziinin'g menne in substantially iini-lmnireil rliitinnii'itli' one of the cri-acting frictionfm'iiibersf Various 'combinations nf` elements 'and ilitierent nieiuisdiild be readily empio ed to obt'iiiii t-li'e ri-.eiiits'secnred by the mee iiinisiii rli'si'loseil without' departing fi'oiirtne spirit iiiidsope 'c jf this invention, the illiistration's herewith'bing merely by wiiy of exi'impleg," .I .u, i.

Onergqiiiiidiinentggf 'this 'invention is sliilvnbywftlie acon'ipanvin" drawings in which 1*" Fig, Zzl l. .ig.,"2i.is fsectioniil View on. line AA Fig.4 1'." Fig. is n--siiieelevatien of n nibil'rlfiention of niy;.inv`entioii; -and- Fig.- 4 iijlngitndi'nal section' efe modification of'ii detail fx'tlie'invention.

Referring to. Figi-.15' XiindfY represent ieliiftively.` inovble eienients, .wlioe. motiom, nue Feliiti'ye ton'tlie'etiier, "it:f i,-desiredy todiei-k'. rgifliite;or, centroid' These elements.

nre illustrated merelyiigrammaticlly fo'r 'flic' 'piii'ps'o of indigit'ii'igtiintthisjinvention i 41 itin sectional view on line BBV Drum nieinbei il is i'nirietl by the. element 4 j sind is vseiziireil thereto by iin'y enitiibleA ineens siicli :is byciip screws 4. liri-niliiigV frein the iliiiiii inen'iber P is :i hollow iiiigiii-v bei 5. Seciiieil to this nienilger. 5,`.iis for ifX- i :imple hy linnking 1nto it, is :rspifing T. .The

other end o f spi-ing 'i' is 'seem-eti to irspr'ing ietziinei byany suitable 'nie-zins smilies,

for exemple, by nhookf), i'y'liie-li may? it", desired, be formed integral ii'illi the pi'iiig.

p This sprin v retainer 8 may he. vof ilie Vfoi-in of a Compete ring orl. lriiiii as Slim'nin siicli, for example',1a's, tiigit shown in; elev:\ 'i tion in Fig. 3.4 The forinni springylfetainf' ing ineens' 8' iis shown in, .Figal kieteoiily to maintain the "outer end f spring-7 .oiit

Figs. 1 and 2, lor'may,bef'of iinyntlier'Ifni-'iii of Contact ivitli drum 3. Siieh.abliieiiiiitedf'l erin of spring ret-ainer'iill',"honererfbw] ns to hold the r'einiiinclerfof valut-ion of the spi'ing'tightenqngli tggke'ep'jo means is provided foriidequn'telv iniiii'iti'iiii- 4ing; spring 7 out of contiet'witli 'I ruin' 351 ByY this arrangement of-A 'Mts-ii'. 'will al'slo' be seen that the stud po'rti'oof'membeiltfil ly long to provide adeqiiate' bearin'gif'eitto' "res insure the travel of"spring-retgiiiigibiibet'f,

8 being miiiiit-.i'ii'ied' 'n subtiintidlly"cnn-f tric relation with drum member 3, ind ii'eiicel. in siibstiintiiill'iv constant tion'meinber 14;, for lnri'g .peiod'nf service'. If desired.'- tlie flanged' :member nini" 'iieiiol" .f. lowed out iis sliwn'ntbl. in Fi'glgfi to prof "reliftiofi 'lwitli .'ftie 100 liibric'ation' :between .members @16 kind 5 igoi* 105 cimd to .botlizfr'iction member Mend meri`l` N. 'i i rough -an'y ,s i'iiteble; means siichgaswfon-IO example. by meimiof iilsti'apl T3 suitably eea.-

siiiber 12. Friction member 14- may be provided with a backing 18, as shown, if desired. for the purpose of additional strength or for the purpose ot liexibly maintaining any 5 given curvature to member 14.

Also secured to friction member 1-i as. for example, by means of rivets 24, is a power-transmitting member or strap which strap is secured also to element i. Coverunember-O is secured to drum member 3 by any suitable means, such as, for example, by screws 2l. This cover member 2O is provided with a slot or window lor the passage of strap 23. The drum member 3 and the friction member 14 constitute one type of co-pcting friction members, although it is apparent that'these members may be made in any other sha than that of a purely cylindrical drum an4 a split ring, and relatively asso- 5 ciated in various other ways than that just described, and still incorporate therein the essentials of my invention. lVhile I have here illustrated but two forms of spring-retaininfr mean'a andhave shown but one examptle of associating the sprii'ig-retaining means with the drum member, it will nevertireless be apparent that these members may be made in other shapes than those illus` 3 trated,and ma be relatively associated in other ways, an still incorporate therein the essential 'feature of this invention, which is to provide a single bearing of suoli proportions, and so arranged with relation to other parts of the mechanism', as to maintain the position of a spring-retaining'nieans for a satisfactorily long period of service. As attached, in the present instance, to elc- V ments X and Y, the invention is operative 4o to retard or control the relative separation of these elements without retarding their relative approach. It is believed that the operation of the device, as shown in the. present instance, will require no explanaif, non. Tajihose skilled in the m, it will be readily understood that upon the approach of elements X and Y, the spring 7 will immediately'act' to revolve friction member 14 around drum 3 in a counter-clockwise di- -5o rection and will, at the same time, wind up the strap .23 upon friction member 14 to whatever extent the approach of element-s X and Y' rmits.' The separation of elements X and will be retarded by the friction between member 14 and drum 3. This'riCtiOn, of course, is aughmented b the strength of .sring "Il which olds bac in .the opposite traction, on member 14, While I have illustrated' and described a 0 0 preferred form of construction forcarrying my invention'into elifect,V this is capable ofvariations land modifications without ,departing from the spirit of the invention.. I,

gthemfore, do not wish to'belimted to the 55 precise details of construction net fortb, but

.outside thereof to-support thainner con! desire to avail myself of such variations and niodiiications as come within the scope of the appended claims.

Having:r thus described my invention, what l claim and desire to protect by Letters Patent of the United States is:

l. ln mechanism for retarding motion between two relatively movable elements, a drum adapted to be secured'to one of said elements, a friction member -in eontactwith said drum and adapted to be connected with said other element, a spring so associated with said drinn and said friction member as to tend to relatively move them in one di rection, a retainer for said spring and a bearing for said retainer, said bearing being supported by the inside of a hollow Amember located within the inner convolu- .tion ot the spring.

2. In mechanism for ,retarding motion between two relatively movable elements, a drum adapted to be secured to one of said elements, a friction member in contact with said drum and adapted to be connected with said other element, a spring so associated with said drum and said friction member as to tend to relatively move them' inl one direction, a retainer for said spring and a journal Afor said retainer` said journal being.r supported by the inside of a hollow member secured to said drum;

3. In mechanism for retarding motion between two relatively movable elements, a drum adapted to be secured to one of said elements, a friction member in contact with said drum and adapted to be connected with said other element, a spring soaasociated with said drum and said friction member as to tend to relatively move them iin"one direction. a retainer for said spring, a jour- In nal for said retainer, a hollow member Lin xed relation with said drum forsup orting said retainer against the inner wa l of saidhollow member, 'and a bushing between sidffournal and said hollow member. "l1 110 4. n mechanism for retarding motion between two relatively movable elements, a drum member adapted tobe 'secured to one of said elements, a friction member in contact with said .drum member and adapted to be connected with said other element, n spring so Sassociatedi' with said drum member and said friction member as to tend to relat'ivelyrm'ove them in one direction.

a retainer forsaid spring and a hollow member protruding from said drum mega# ber and serving, on lthe inside thereof, to support said spring retainer and on the volution of said spring. *12

5, n mechanism for retarding motion betwee two relatively movable elements, a

-drm member adapted to be secured to one of saidl elements, af'f'rictio'n m'e'mber incontart with said drum member and adapted to o hollow.iiiiiiihvr i-oiisti'iii--tcil :intl arranged tolie ,held -in fixedY relation with sind driimiiienibi-r. :intl Herring to support, on itsuoub l. liir iiiei-liziiiisiii for i'etarfiing motion between! tu'ovri-hitiviili' Iiiiiiizililt elements,

. tzirtriirith sziiil drum iiiviiiber and' adapted to i`or iiiiiintaining the travel of said spring in sililptrintiallcwvont-ambitie relation ivith the.

=heiiiiiI iwiiinsb the inner. wall osaii-l hollow In mechanism adapted for-use in connection withtiro relativelyimovable' elements for ihe'f drii'iii axidfjidriqtcd .to leconnectedywith said-- otlierffelemfef :i :flexible member, 'a spring so lificiiited ."witlriiid l(1r-miiand .said fricr tion iiiemberf 'iis .to'ltciidl to r otzite 'said: fries ali-(find .said drum und also m ad ,ser tion"'inember, said flexible member being at'- tached to saidfriction member adjacent one eiidtheef .Xrliich maken it Vpossible :for ,the device 'to operate throughout its Working range without necessitating that said flexible iiieiiibor.; begnvoiindeipon said .friction iiiei'iiber beyond the'l gap in said friction member, means for holding the outer end of said'spring out of contact with said drum and va'singde bearingrapabl of maintaining, with relation to sniddrunnthe rotative position ofl'ee'iil liist-iiientioned means, seid iea'rin' rhaving' a diameter less than the mean iame'ter oi' the outer-'convolution of said"s'pring. f

8. Iluminechanism'adapted for use in connettionV with two" relativel movable elements for checking their re ativemotion in ondirection'ka drum adapted to be secured uouter'end of xible ,member uponsaid fricv maintaining zrnexnber.

to one of said elements, a friction member, in the form of a split ring, in contact with said drinn and adapted to be connected with said other element by a flexible member, ii spring so associated with said drum and said friction iiieii'iber as to tend` to rotate said fi'ivtioii iiieiiibci around said drum and also to wind said flexible member upon siiid friction member, said flexible member being iiHui-led to said friction member adjacent. one end thereof which ,makes it pos- 'sible for the device to operate' throughout 'its n'orliing range without ynecessitating that siii'il flexible member he woiniil upon said frictionlnienliber beyond the gap in s aid yfriction member, means for `holding a.. portion of'suid spring out of .contact with said with relation 'to' V,said drum, 'the rotativel positioi'iy ofsaid 'hist-mentioned means, said iid-friction iiiliiiibeins-ro-te'iidiorela-r heuring'huving'a diameter less than'the nieiii'r diameter-'of the.. outer convolution of said spring.

9. In mechanism adapted for; use in con- .nection' with two relatively movable ele. ments for checking their relative motion in lone direction, n drum adapted to be secured Vto one ofn'siiid elements, a' friction memberv1 `in the form of a split rin infeontact with siiidrh mii and adapted to .connected with said other element, by :i flexible member. a spring so associated with said drum and saidfiictiori iiie'mber as to tend to rotate said `friction member around s'aid drum und also to 'wind said flexible member' 11 on said friction'n'ieinben said flexible mem fr beingeeliing-tlieirzrelatne motion in one" .directiblnzadrum adapted to beecured to 'neof 'saidfclementg ayfritioniinember, in. 'in of ii'spfliltringiin contactivith said' attached to said frictionV e member .l adjacent .oneend thereof which makes it Apossible for fthe device to operate throughout iteV workling range v'ithout necessitating that said flexible inemberbe' wound upon said fric tionfmember beyond the gap in Said frictionlrnember, qfmemben' for maintaining the sprin out of contact with said drum ana/mem r in fixed relation with the dri'iin' amid'` fixed member being hollow toi" provide a bearing for said spring- 10.-,A-reboundnbaorber for ring-monntable members adaptedAo be connected toA the body and axixres tivel of thel vehiiii.;

lll)

cle, and provided wit variab y overlapping frictionalsur'xcee, one of which is fixed and substantially rigid, and thebtherA flexible for prpducin a braking notion bet-ineen the two relative movablemembers, to mais; frctonally t separation of the-body and axle, tensioning means for drawing the exible frction surface into contact.v with the fixed friction surface, substantially the-total contacting.: being in direct ratio. to the .amount of-,compreesion ofthe springs connecting said body and axle, wherebyseid frietional resistance to their separation isi iso dii

around the druni thus providing for frichip the strap-around the drum thus providing for frictionnl resistance to the separation of the two relatively movable parts, the parts'being arranged and proportioned so that approximatelyY the total amount of overlap is substantially in direct ratio to the amount oi the compression ofthe springs connecting the two relatively movable parts..

13. A rebound absorber for spring mounted vehicles comprising, a stationary drum connected t-o one' of two relatively movable spring-connected parts; a flexible 'stra i or band adapted to be wrapped round the rum and connected byone end to the other of said relativelyV movable parts and n. sprin actuating the other end of the strap and adapted to overla the strap around the drunn'thus provii ing for frictional resistance to thc separation of the two relatively movable parts, the parts being arranedand proportioned so that approximately tlie total amount. of overlap is substantially in direct ratio to the amount of 'the compression of the siringa connecting the two relatively inova le iarts, the spring actuating the stra lining ot relatively great resilienc an length so as to act with substantial y constant tension over tlie range of overlapping of the strap.

14. A' rebound absorber for vehicles comprising a stationary drum connected to one of tivo relatively movable parts; a. exible the drinn and connected by one end tothe other of said ielatively movable parts; and

spring means actuating the other end of the strap and adapted to overla the strap elements, a spring connecting said and sid' flexible member and tending to intional resistance to the separation of the two relatively movable arts, said drum being of circumference su stantially equal to the possible -relative motion' between the strap and tlie drum.

15. A rebound absorber for spring mounted vehicles comprising a ststioiiar siiubber part provided with a cylindrica braking surface; a snubber part journaled concentric with the said braking surface and rotatable throu li substantiall -a com lete circle; n flexib e strap secar snubber srt and ada ted to be wrapped around tie cylindrical raking surface," the said surface .ing of a circumference substantially equal to the ible relative motion Vbetween the strap and said surface; and a spring tending to rotate one snubber part on the other to wrap the strap on the cylindrical braking surface, the normal overlap being substantially not less than equal to the normal static compression of tlie vehicle springs.

f 16. A rebound absorber includin a fixed drum and. a. flexible member he d therearound under' tension, said exible membei' connecting two movablel parts, with ap-A proximatcly its total area. of frictional contact u pon the drum increased in substantial proportion to the'agproach of the fixed and movable part to eac other.

17. In mechanism adapted for use in connection with two relative y movable elements for checking their relative motion in' one direction, a drum adaptedto be secured to one .of said elements, a flexible member adapted to be secured-to the other ofdsaid rum ereasingl overlay the flexible member s roim'd. e drum, means for holding n portion oflad splreing outfof conact.Y with said r'um a ann or sai 'said of sin( spring, said inner convolution being rum.

In witness whereof I have hereunto sst x1n9y20liand this" 29th 'JOHN WARREN WATSON.

to the ast-mentioned held in substantiall fixed rel tion wth s1 rap or hand adapted to be wrappedabeut d y a l w ay of March; A.

lying within the inner convo uton v ionv 

